Unless OS X implements a different cp and mv than the standard FreeBSD ones, …
It does (though it didn't before 10.4). There's still lots of code out there that doesn't respect them, no doubt, but to my knowledge you can use the built-ins without worrying about losing your resource forks.
It does (though it didn't before 10.4). There's still lots of code out there that doesn't respect them, no doubt, but to my knowledge you can use the built-ins without worrying about losing your resource forks.